Features:- Degree range from 150° to 800°, provide perfect fit swim goggles for you- 100% M-hardness silicon & leak-free eyecup make the goggle shape your face & head properly- PC UV protected lens protect your eyes fully dimensionally- Anti-fog lens promise you long time of clear sight when swimming- Double design and unsmooth part on strap to resist sliding- Nose belt & head strap could be adjust according to your size in need- Head strap on 45 angle to prevent leakage of water- Put the goggle in water before swim for long time anti-fog consideration- Do not scratch the lens by nails or other things to keep clear sight- Dry it after washing in clear water, keep in cool and dry place in package